Sorry for not replying sooner, I have been very busy lately.
I have got both customer displays to power on self test, they were just plugged into the wrong com port!
I have also managed to set the character table to U.K. and match the port settings to those it is asking for in the self test.
However how I am unsure of the correct dip-switch setting to make them work with the XN software. I have changed the dip-switches and there are the following command modes to choose from: POS7300, Epson ESC/POS, CD5220 II, DSP800, AEDEX, UTC/S, UTC/PADM787
Any help would be appriciated.